Progressive Display Video Scaling Without De-interlacing
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Solution Overview
Problem
Current progressive displaying terminals face high hardware requirements and costs when playing high-definition interlaced videos, particularly due to the processing burden of de-interlacing, which can compromise picture quality.
Innovation Solution
A method and apparatus that extract and scale odd and even fields of interlaced video frames to match the screen resolution of the terminal, eliminating the need for de-interlacing by directly playing the scaled fields, thereby reducing hardware demands and ensuring good picture quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If de-interlacing operation is performed on high-definition interlaced video, then picture quality is improved, but hardware configuration requirements and processing burden increase significantly
Solution Approach 1:
The patent divides the interlaced video into separate odd field and even field components, processing them independently through scaling operations rather than performing complex de-interlacing. This segmentation approach maintains picture quality while reducing hardware requirements by avoiding the need for sophisticated interlaced processing circuits.
Solution Approach 2:
Instead of converting interlaced video to progressive format through de-interlacing, the patent inverts the approach by directly scaling and displaying the interlaced fields on progressive displays. This reverse methodology eliminates the processing burden of de-interlacing while still achieving acceptable picture quality on modern displays.
2Manufacturing precision
If de-interlacing operation is performed on high-definition interlaced video, then picture quality is improved, but processing burden increases to 1920*1080*25 per second
Solution Approach 1:
The patent segments the video processing into independent field scaling operations, processing odd and even fields separately at lower computational complexity. This avoids the computationally intensive de-interlacing algorithm while maintaining adequate picture quality through straightforward scaling transformations.
Solution Approach 2:
The patent employs simpler, less computationally expensive scaling operations instead of complex de-interlacing algorithms. These lighter processing operations reduce the processing burden from 1920*1080*25 operations per second to more manageable levels, making high-definition video playback feasible on devices with limited processing power.
3Manufacturing precision
If de-interlacing operation is performed, then picture quality is improved, but cost increases due to higher hardware requirements
Solution Approach 1:
By segmenting the video into separate fields and applying simple scaling operations, the patent eliminates the need for expensive de-interlacing hardware. This approach maintains picture quality sufficient for progressive displays while dramatically reducing manufacturing costs through the use of simpler, more affordable processing components.
Solution Approach 2:
The patent replaces expensive de-interlacing hardware with cheaper scaling operations that can be implemented using less costly processors and memory resources. This substitution maintains adequate picture quality while reducing the overall system cost, making high-definition video playback accessible on budget-friendly devices.
Data Source
AI summary
A progressive displaying terminal and a video playing method and an image processing apparatus thereof are provided. The video playing method includes: extracting an odd field and an even field of each frame of an interlaced video, where the interlaced video has an initial resolution higher than a screen resolution of a progressive displaying terminal, and scaling the odd field and the even field of each frame respectively and then playing the odd field and the even field of each frame. In this way, the present disclosure eliminates the need of de-interlacing when playing an interlaced video on a progressive displaying terminal, so the hardware configuration requirements and the cost are reduced and a good picture quality is ensured during playing of the video.